Meco 27-AUTO - Page 3

225AUTO : 28-09-2012
AUTORANGING
DIGITAL CLAMP METER
MODEL : 225AUTO
INSTRUCTION MANUAL
®
1. SPECIFICATIONS
1.1 General Specification
Display
n 3¾ digit liquid crystal display (LCD) with a
maximum reading of 3999.
Polarity
n Automatic, positive implied, negative polarity
indication.
Overrange
n (OL) or (-OL) is displayed.
Zero
n Automatic.
Low battery
n “ ” is displayed when the battery
indication voltage drops below the operating level.
Measurement
n 3 times per second, nominal.
rate
Operating
n 0°C to 50°C at < 70% relative humidity.
Environment
Storage
n -20°C to 60°C, 0 to 80% R.H. with battery
Temperature removed from meter.
Accuracy
n Stated accuracy at 27
0
C ± 5
0
C,
<75% relative humidity.
Power
n Two 1.5V ‘AAA’ Size Battery
Battery life
n 200 hours typical
Dimensions
n 186 x 58 x 30mm (approx.)
Weight
n 165gms including battery (approx.)
Accessories
n Pair of test leads x 1, instruction manual x 1,
1.5V batterys (installed) x 2, Carring Case x 1
Maximum Jaw
n 32mm
Opening
1.2 Electrical Specification
Accuracies are ± (% reading + number of digits) at 27 ± 5°C and
humidity of less than 75% RH.
AC CURRENT (50-60Hz)
DC VOLTAGE (Auto Ranging)
Range Accuracy Overload Protection
40A
±(1.5% rdg + 5dgt)
400A AC Max.
400A for 1 minute
Range Accuracy Overload Protection
600V ±(0.8% rdg + 1dgt)
AC voltage ranges 600V AC
Resistance ranges 250V AC
Range Accuracy Overload Protection
600V ±(1.0% rdg + 3dgt)
AC voltage ranges 600V AC
Resistance ranges 250V AC
RESISTANCE (Auto Ranging)
Range Accuracy Overload Protection
40M
VV
VV
V ±(1.0% rdg + 2dgt)
AC voltage ranges 600V AC
Resistance ranges 250V AC
AC VOLTAGE (Auto Ranging) 50-60Hz
Continuity Check
Threshold Level : 50V Approx.
Response Time : 1m Sec. Approx.
Open Circuit Voltage: 0.4V Approx.
Indication : ‘
’ is displayed on LCD and buzzer sounds
at continuity.
Diode Test
Measurement Current : 1.0 ± 0.6 mA Approx.
Open Circuit Voltage : 0.4V Approx.
2. OPERATION
Before taking any measurements, read the safety information section.
Always examine the instrument for damage, contamination (excessive
dirt, grease, etc.) and defects. Examine the test leads for cracked or
frayed insulation. If any abnormal conditions exist do not attempt to
make any measurements.
SELECT BUTTON
The Button is used for select V /
/
range.
DATA HOLD BUTTON
Press Data Hold button to toggle in and out of Data Hold mode, In the
Data Hold mode, the “ HOLD ” annunciator is displayed.
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